When binaural sound signals are presented with loudspeakers, the system inversion involved gives rise to number of problems such as, for example, loss of dynamic range and a lack of robustness to small errors of control performance. These problems for such systems are investigated and this has resulted in the proposal of a new system, the Optimal Source Distribution ("OSD") system, which overcomes these problems by means of variable transducer span. A practical solution to realise a variable transducer span by discretisation is also described. Several examples of the "OSD" system are demonstrated which in practice produce a very robust system over the whole audible frequency range. The relationship to the "Stereo Dipole" system is also described.

Authors: Nelson, Philip; Takeuchi, Takashi
Affiliation: Institute of Sound and Vibration Research, University of Southampton, Southampton, Hampshire, United Kingdom
AES Convention: 110 (May 2001) Paper Number: 5372
Publication Date: May 1, 2001
Subject: Multichannel Sound

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